.header {
    display: flex;
    margin-bottom: 12px;
    flex-direction: column;
    align-items: center;
    border-bottom-left-radius: 15px;
    border-bottom-right-radius: 15px;
    border-bottom: solid #4ac29a 3px;
    background: #4AC29A;
    /* fallback for old browsers */
    background: -webkit-linear-gradient(to right, #BDFFF3, #4AC29A);
    /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(to right, #BDFFF3, #4AC29A);
    /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
}

.header:hover {
    box-shadow: 10px 10px 10px #4ac29a;
    transition: 1s;
}

.header-fu {
    margin: 5px;
}

.main-aside {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.main {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.aside {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 600px;
    border-top: solid #4ac29a 2px;
    border-top-left-radius: 25px;
    border-top-right-radius: 25px;
    box-shadow: inset 0 4px 8px #4AC29A, 0 0 32px #4AC29A;
    margin: 15px;
    padding: 35px;
}

.remark-input {
    border-bottom: solid #4AC29A 1px;
    box-shadow: 0 4px 0 #4AC29A;
}


.article {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 600px;
    border-radius: 25px;
    box-shadow: inset 0 4px 8px #4AC29A, 0 0 32px #4AC29A;
    margin: 15px;
    padding: 35px;
}

.article-title {
    margin-top: 5px;
    margin-bottom: 10px;
    font-size: 24px;
    background-image: linear-gradient(to left, #93eac4, #34d4aa);
    color: transparent;
    background-clip: text;
    -webkit-background-clip: text;
    line-height: 130%;
}

.article-text {
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizelegibility;
    font-family: Segoe UI, SegoeUI, Helvetica Neue, Helvetica, Arial, sans-serif;
    font-weight: 400;
    word-wrap: break-word;
    color: var(--theme-text);
    line-height: 160%;
}

.img {
    box-shadow: inset 0 4px 8px #4AC29A, 0 0 32px #4AC29A;
    border-width: 2px;
    text-align: center;
    border: solid #4AC29A 2px;
    margin-top: 5px;
    margin-bottom: 10px;
}

.article-image {
    margin-top: 15px;
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.article-download {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.lanzou {
    background-image: linear-gradient(to right, #25aae1, #4481eb, #04befe, #3f86ed);
    box-shadow: 0 4px 15px 0 rgba(65, 132, 234, 0.75);
    margin:10px;
    width:70px;
    height: 20px;
    text-align:center;
    font-size: 16px;
    border-radius: 50px;
    color:#fff;
    cursor: pointer;
    outline:none
}

.lanzou:hover {
    box-shadow: 10px 12px 15px rgba(65, 132, 234, 0.75);
    transition: 0.5s;
}


.baidu {
    background-image: linear-gradient(to right, #eb3941, #f15e64, #e14e53, #e2373f);
    box-shadow: 0 4px 15px 0 rgba(242, 97, 103, .4);
    margin:10px;
    width:70px;
    height: 20px;
    text-align:center;
    font-size: 16px;
    border-radius: 50px;
    color:#fff;
    cursor: pointer;
    outline:none;

}

.baidu:hover {
    box-shadow: 10px 12px 15px rgba(242, 97, 103, .4);
    transition: 0.5s;
}

.ali {
    background-image: linear-gradient(to right,  #667eea, #764ba2, #6B8DD6, #8E37D7);
    box-shadow: 0 4px 15px 0 rgba(116, 79, 168, 0.75);
    margin:10px;
    width:70px;
    height: 20px;
    text-align:center;
    font-size: 16px;
    border-radius: 50px;
    color:#fff;
    cursor: pointer;
    outline:none;
}

.ali:hover {
    box-shadow: 10px 12px 15px rgba(116, 79, 168, 0.75);
    transition: 0.5s;
}

.github {
    background-image: linear-gradient(to right, #25aae1, #40e495, #30dd8a, #2bb673);
    box-shadow: 0 4px 15px 0 rgba(49, 196, 190, 0.75);
    margin:10px;
    width:70px;
    height: 20px;
    text-align:center;
    font-size: 16px;
    border-radius: 50px;
    color:#fff;
    cursor: pointer;
    outline:none;
}

.github:hover {
    box-shadow: 10px 12px 15px rgba(49, 196, 190, 0.75);
    transition: 0.5s;
}

.footer {
    margin-top:10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
    border-top: solid #4ac29a 3px;
    background: #4AC29A;
    /* fallback for old browsers */
    background: -webkit-linear-gradient(to right, #BDFFF3, #4AC29A);
    /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(to right, #BDFFF3, #4AC29A);
    /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
}

.footer:hover {
    box-shadow: 0px 0px 10px #4ac29a;
    transition: 1s;
}

.footer1 {
    margin:5px;
}